Seemless piston door

I "Challenge" you all to make this again but more compact
The rules are:
1) You must not be able to see the pistons when opened or closed
2) The door Itself must be a double piston extender
3) Redstone wiring must be involved.
4) It must come from the sides and not the floor or the ceiling
Good Luck!
Note: It will be labled REDSTONE TESTING WORLD IN YOUR SAVES

Dm me your reaults on twitter @skyfrostgaming1 or make a map on here title Skyfrostgaming's challenge accepted!